Last week when I updated some App Store apps they completed but when I resprang my iPhone they went back to waiting and an empty bar, if I tap then they will go back to normal but if I download another App Store update, every app I've updated in the last week will go back to the waiting icon until I tap it. Any ideas?

I uninstalled and reinstalled and all of the icons that had problems have fixed themselves. I guess it happens to all installed apps post installation, guess its down to the developer. Thanks for the help!